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authortmk <nobody@nowhere>2013-03-15 22:22:57 +0900
committertmk <nobody@nowhere>2013-03-16 17:24:05 +0900
commitf0c5f1b910ecf9536e5b95cc4ca9a43b0f4b2c36 (patch)
treef68e720804c1c82109c1de19dc3cc7d9eb2cabf0
parent42f6ff088652827a82474c3a07f4c2c9497bacd9 (diff)
Add breathing sleep LED during USB suspend
-rw-r--r--common.mk6
-rw-r--r--common/sleep_led.c84
-rw-r--r--common/sleep_led.h10
-rw-r--r--keyboard/gh60/Makefile.lufa1
-rw-r--r--protocol/lufa/lufa.c36
5 files changed, 128 insertions, 9 deletions
diff --git a/common.mk b/common.mk
index f9faf2f95b..4054893b44 100644
--- a/common.mk
+++ b/common.mk
@@ -47,5 +47,11 @@ ifdef $(or MOUSEKEY_ENABLE, PS2_MOUSE_ENABLE)
OPT_DEFS += -DMOUSE_ENABLE
endif
+ifdef SLEEP_LED_ENABLE
+ SRC += $(COMMON_DIR)/sleep_led.c
+ OPT_DEFS += -DSLEEP_LED_ENABLE
+endif
+
+
# Search Path
VPATH += $(TOP_DIR)/common
diff --git a/common/sleep_led.c b/common/sleep_led.c
new file mode 100644
index 0000000000..edf68c3523
--- /dev/null
+++ b/common/sleep_led.c
@@ -0,0 +1,84 @@
+#include <stdint.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/pgmspace.h>
+#include "led.h"
+#include "sleep_led.h"
+
+/* Software PWM
+ * ______ ______ __
+ * | ON |___OFF___| ON |___OFF___| ....
+ * |<-------------->|<-------------->|<- ....
+ * PWM period PWM period
+ *
+ * 256 interrupts/period[resolution]
+ * 64 periods/second[frequency]
+ * 256*64 interrupts/second
+ * F_CPU/(256*64) clocks/interrupt
+ */
+#define SLEEP_LED_TIMER_TOP F_CPU/(256*64)
+
+void sleep_led_init(void)
+{
+ /* Timer1 setup */
+ /* CTC mode */
+ TCCR1B |= _BV(WGM12);
+ /* Clock selelct: clk/1 */
+ TCCR1B |= _BV(CS10);
+ /* Set TOP value */
+ uint8_t sreg = SREG;
+ cli();
+ OCR1AH = (SLEEP_LED_TIMER_TOP>>8)&0xff;
+ OCR1AL = SLEEP_LED_TIMER_TOP&0xff;
+ SREG = sreg;
+}
+
+void sleep_led_enable(void)
+{
+ /* Enable Compare Match Interrupt */
+ TIMSK1 |= _BV(OCIE1A);
+}
+
+void sleep_led_disable(void)
+{
+ /* Disable Compare Match Interrupt */
+ TIMSK1 &= ~_BV(OCIE1A);
+}
+
+
+/* Breathing Sleep LED brighness(PWM On period) table
+ * (32[steps] * 8[duration]) / 64[PWM periods/s] = 4 second breath cycle
+ */
+static const uint8_t breathing_table[32] PROGMEM = {
+ 0, 0, 0, 2, 9, 21, 37, 56, 78, 127, 151, 175, 197, 216, 232, 244,
+ 254, 244, 216, 197, 175, 151, 127, 78, 56, 37, 21, 9, 2, 0, 0, 0
+};
+
+ISR(TIMER1_COMPA_vect)
+{
+ /* Software PWM
+ * timer:1111 1111 1111 1111
+ * \----/\-/ \-------/+--- count(0-255)
+ * | +--------------- duration of step(8)
+ * +-------------------- index of step table(0-31)
+ */
+ static union {
+ uint16_t row;
+ struct {
+ uint8_t count:8;
+ uint8_t duration:3;
+ uint8_t index:5;
+ } pwm;
+ } timer = { .row = 0 };
+
+ timer.row++;
+
+ // LED on
+ if (timer.pwm.count == 0) {
+ led_set(1<<USB_LED_CAPS_LOCK);
+ }
+ // LED off
+ if (timer.pwm.count == pgm_read_byte(&breathing_table[timer.pwm.index])) {
+ led_set(0);
+ }
+}
diff --git a/common/sleep_led.h b/common/sleep_led.h
new file mode 100644
index 0000000000..aebdbeaa5a
--- /dev/null
+++ b/common/sleep_led.h
@@ -0,0 +1,10 @@
+#ifndef SLEEP_LED_H
+#define SLEEP_LED_H
+
+#define NO_SUSPEND_POWER_DOWN
+
+void sleep_led_init(void);
+void sleep_led_enable(void);
+void sleep_led_disable(void);
+
+#endif
diff --git a/keyboard/gh60/Makefile.lufa b/keyboard/gh60/Makefile.lufa
index a5ff609a77..8042ff3f49 100644
--- a/keyboard/gh60/Makefile.lufa
+++ b/keyboard/gh60/Makefile.lufa
@@ -103,6 +103,7 @@ BOOTMAGIC_ENABLE = yes # Virtual DIP switch configuration(+1000)
MOUSEKEY_ENABLE = yes # Mouse keys(+4700)
EXTRAKEY_ENABLE = yes # Audio control and System control(+450)
CONSOLE_ENABLE = yes # Console for debug(+400)
+SLEEP_LED_ENABLE = yes # Breathing sleep LED during USB suspend
#NKRO_ENABLE = yes # USB Nkey Rollover - not yet supported in LUFA
#PS2_MOUSE_ENABLE = yes # PS/2 mouse(TrackPoint) support
diff --git a/protocol/lufa/lufa.c b/protocol/lufa/lufa.c
index 556d0aeecc..127dece547 100644
--- a/protocol/lufa/lufa.c
+++ b/protocol/lufa/lufa.c
@@ -36,12 +36,20 @@
this software.
*/
+#include <avr/sleep.h>
+#include <avr/wdt.h>
#include "report.h"
#include "host.h"
#include "host_driver.h"
#include "keyboard.h"
+#include "action.h"
+#include "matrix.h"
+#include "led.h"
#include "sendchar.h"
#include "debug.h"
+#ifdef SLEEP_LED_ENABLE
+#include "sleep_led.h"
+#endif
#include "descriptor.h"
#include "lufa.h"
@@ -140,10 +148,9 @@ static void Console_Task(void)
* 2) EVENT_USB_Device_Reset
* 3) EVENT_USB_Device_Wake
*/
-#include "led.h"
-#include "matrix.h"
void EVENT_USB_Device_Connect(void)
{
+ led_set(0x1f); // all on
}
void EVENT_USB_Device_Disconnect(void)
@@ -156,17 +163,21 @@ void EVENT_USB_Device_Reset(void)
void EVENT_USB_Device_Suspend()
{
+#ifdef SLEEP_LED_ENABLE
+ sleep_led_enable();
+#endif
}
-#include "action.h"
void EVENT_USB_Device_WakeUp()
{
// initialize
matrix_init();
clear_keyboard();
- // turn off LED
- led_set(0);
+#ifdef SLEEP_LED_ENABLE
+ sleep_led_disable();
+#endif
+ led_set(host_keyboard_leds());
}
void EVENT_USB_Device_StartOfFrame(void)
@@ -493,7 +504,6 @@ static void SetupHardware(void)
}
-#include "matrix.h"
static bool wakeup_condition(void)
{
matrix_scan();
@@ -503,8 +513,6 @@ static bool wakeup_condition(void)
return false;
}
-#include <avr/sleep.h>
-#include <avr/wdt.h>
#define wdt_intr_enable(value) \
__asm__ __volatile__ ( \
"in __tmp_reg__,__SREG__" "\n\t" \
@@ -527,11 +535,15 @@ int main(void)
SetupHardware();
keyboard_init();
host_set_driver(&lufa_driver);
+#ifdef SLEEP_LED_ENABLE
+ sleep_led_init();
+#endif
sei();
while (1) {
// while suspend
while (USB_DeviceState == DEVICE_STATE_Suspended) {
+#ifndef NO_SUSPEND_POWER_DOWN
// Enable watchdog to wake from MCU sleep
cli();
wdt_reset();
@@ -558,6 +570,7 @@ int main(void)
// Disable watchdog after sleep
wdt_disable();
+#endif
// Send request of USB Wakeup from Suspend to host
if (USB_Device_RemoteWakeupEnabled) {
@@ -575,9 +588,12 @@ int main(void)
}
}
-/* watchdog timeout during sleep */
+#ifndef NO_SUSPEND_POWER_DOWN
+/* watchdog timeout */
ISR(WDT_vect)
{
+ /* wakeup from MCU sleep mode */
+/*
// blink LED
static uint8_t led_state = 0;
static uint8_t led_count = 0;
@@ -585,4 +601,6 @@ ISR(WDT_vect)
if ((led_count & 0x07) == 0) {
led_set((led_state ^= (1<<USB_LED_CAPS_LOCK)));
}
+*/
}
+#endif